Dear brother-in-law, you are one of the most wonderful people that God has placed in my path and I thank you for that!
Take advantage of your birthday to recognize all that the Father in Heaven has done for you and give thanks for another year of life today complete.
Our Lord has given you the blessing of life and many gifts over time. Even in times when you can't find an explanation, you know that in some way, it was God's work.
Have the holy and happy day you deserve, dear brother-in-law, and many years of life!